Ore-pocket door.



c. G. BAuII/IGAHTNER.

ORE POCKET DOOR.

APPLICATION FILED JUNE I9. |914.

Patented May 25, 1915.

3 SHEETS-SHEET l.

C. G. BAUMGAR'TNER.

ORE POCKET DOOR.

APPLICATION F1LEo1uNE19.1914.

Patented May 25, 1915.

3 SHEETS-SHEET 2.

C. G. BAUMGARTNER.

ORE POCKET DOOR.

APPLICATION FILED JUNE 19, 1914. L 31.4@94360 Patented May 25, 1915.

3 SHEETS-SHEET 3.

I I 7/0/', W www', QQ/517% fill 7M CHARLES Gr. BAUMGABTNER, 0F CHICAGO, ILLINOIS.

ORE-EGCKET DOOR.

TOIaZZ whom it may concern.'

Be it known that I, CHARLES Gr. BAUM- GARTNER, a citizen of the United States, and resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful lmprovements in Gre-Pocket Doors, of which the following is a specification.

My invention relates to apparatus :for handling granular or similar materials and has particular reference to a-novel' door for closing the discharge aperture in an orebin. As is wellknown, it is customary tovstore, temporarily or otherwise, large. quantities of ore or similar granular materials in .loins usually elevated above the point of discharge. The bins to which the `present im# provementwis intended to be applied Iare those to which .ore is supplied and from which the ore is delivered Aby gravity directly into the vessels or cars for shipment. A requisite in a door or closure for-such bins is that such a 'device maybe readily operated against a heavy pressure such as is occasioned by a mass of ore pressing thereagainst. This is easily accomplished by' the breaking of a knuckle joint ina link permitting the door to swing outwardlagainst the pressure of the flowing materia However, it frequently occurs that thebiniis not to be completely emptied and thatgthe door should be closed during the'flow of the material.l This could 'not be accomplished witha door which merely swung assuificient force could not be -exertedto overcome the force ofthe material. .I'have therefore devised a door, arcuate in` outline and adapted for free rotation on ashaft, the connection to the shaft being by means of a rigidt link and a breakable link', the .last named link permitting e door .to ,swing outwardly whilethe rigid link, permits the l door to swing bodily,b oth movementsbeing in an arcuate path. A counter-weight is `"provided and the weight thereof is sov pro- 'oortigned to the weight of the. door that when the door is in normal position 4ila/lover.'-

balances the counter-weight and' remainsin such position. However, when one pf the links is brokenand the door -1 s pg ar1n itte'd`., to? swing inward toward-the shaft .thep,repon Specication of Letters Patent. v

rasanten Mayas, reis.,

Application tiled Junel, 191.4. Serial 33o. @56,14%

derance of weight is then with the counterweight and the door is swung open.

Tn order yto,close the door when it is in its open position, the broken link is straight-v cnedv out thils bringingthe door into its normaler primary position, at which time the wei hte-f the door overcomes the coun'- te'r-weig t and swings into position by its own weight.4 This may be 'accompllshed even ,though a `stream of ore is flowing througlilthe opening in view of the fact that the closing .movementof the .door is in an arcuatepathfan notentirely opposed to the line qffm'otionof the material. Tn fact the material .assists :in .closing the door.

The invention vvilLbe more readily understood loyfreference .to the accompanying drawings, wherein,

Figurelgisa section. through an orepocket andthe discharechutetherefrom, showing f door and operating mechanism,

my novel the first posltinof. the door when released being shown .in dottedv lines; Fig. 2 is a similar eView showingin full' lines the door in its-normal openposition and in dotted lines the position it will assume just prior to ,beginnt the closing movement, and, Fig. V3 isa 'r'.gmlt3 elevation of the constructin means of arigid link 19, and two links 20, 21, having. a .knuckle joint connection,

the'link"21,' being. keyed toa hollow shaft .33, whichsurrounds, and turns upon shaft Alsogsecui'ed' to,- the shaft 14 and rotatable therewith isnamarm 22, to the end of which a..,counterweight`f23, is secured. Freely rotatable@ @heheh-.0f the link 21, is a. mem: bei"provided.bn` one side -with a sector 24,

gear.. lteeth, ony ,its Aperiphery and. on

havi, the; fase-rate a seater. 2.5, having sters form, 1s provided in- 26, 27, made integral therewith, to limit the rotation of the sector' about the hub of 21, by contacting with the link 21. The degree of angular motion allowed between the stops 26, 27,is slightly greater than the angular travel of the arms 19, about the shaft 14, in order that when the door is released in either the opening or closing operation, the

link 21 will not strikethe stops and bring a shock on the mechanism. Movement is imparted to the member carrying the two sectors by means of a worm 28, secured to a vertical shaft 29, sui-mounted by the handwheel 30, located so as to be available to an operator on the platform.

Assuming the parts to be in the position of Fig. 1, that is, the closed position, if the operator desires to open the door, the handwheel 30 is rotated thus moving the sector 25, in a clockwise direction. The coperation of the stop 26 thereon with the link 21, breaks the vstrut by means of which the lower edge ofthe door is held. This permits the door to swing into the dotted line position of Fig. 1, under the impulse of the material flowing down the chute. When the parts reach the dotted line position the weight of the door is shifted inward toward its pivot and the counter-weight 23 has the preponderance of weight. This causes the bodily swinging ofl the door around the shaft 14 into the full line position of Fig. 2. When the parts reach such position, the door is caught by engagement of the latch 31 with a pin 31, and positively held.

If the door is to be closed the hand-wheel is rotated in an opposite direction causing a movement of the sector 25, in a counterclockwise direction and through contacting of the stop 27 with the link 21, the two links are .straightened and the lower edge of the door 1,8 is forced away from the shaft and into the normal position of the door. In this position the weight of the door is greater than that of the counter-weight and the door has a tendency to rotate about the shaft 14. When the latch 31 is released by actuating the Alever 32, the door is permitted to swing in its arcuate path and to assume the full line position shown on Fig. 1.

'I have described but one set of the links and counter-weights but it will be apparent that the links and counter-weights are provided on each side of the door and that each is a duplicate of the other.

Many advanta es are present in a device such as herein described. The structural work is much less complicated, the hanging counter-weights are eliminated, the door i's in equilibrium either closed'or open and the operation may be completed from one position on a railed platform. The door may be closed during the flow of material.

The construction is capable of considervsaid shaft and closure,

able modification and such changes as are within the scope of my claims I consider within the spirit of my invention.

I claim:

1. In a device of 'the class described, the

combination of a wall having an opening therein, a closure for said opening, actuating means for said closure, said means including a pivotedmembers having an arcuate portion, a rigid link, a pairof links having a knuckle joint connection, both said link and said pair of linksbeing secured to said closure and mounted for actuation by said arcuate member, and means lfor actuating said arcuate me ber `and said links for opening and closing said door, substantially as described.v

2. In a device of the class described, the combination of a wall having an opening, a segmental closure for said opening, a shaft, a rigid link connecting said shaft and said closure, a broken link also connecting means forl operating said broken link, and meansfor effecting the. movement of the closure, substantially as described.

3. In. a device of the class described, the combination of a wall having an opening, a closure for said opening, a shaft, links connecting said door and shaft, one of said links being rigid and the other link havin a knuckle joint, a counter-weight for said closure, and means for actuating said jointed link, substantially as described.

4. In a device of the class described, the combination of a door member, a shaft, links connecting said door to said shaft, the lower link having a joint therein, a counter-weight pivoted on said shaft and acting on said door, and means for breaking the joint in said lower` link and allowing said door to swing on the outer end of the upper linkas a pivot, substantially as described. f

5. In a device of the class described, the

lower edge of the door swung toward the shaft, substantially as described.

6. In a device of the class described, the combination of a door, a shaft, a rigid and a` jointed link connecting said door to said shaft, manually operable means for breaking vthe joint in one of said links to permit the opening of the door. and for straightening out said link to permit the closing of the door, substantially as described.

1. In a'. device of the class described, the

memes@ combination of a door, a shaft, a rigid and a open or clossethe amie, substantially as dejointed link connecting said door to said scribed.

shaft a counter-Weight acting upon said v A il door ,through said. links, and manually op- CHLES G BAUMGTNER 5 erable means for shortening or lengthening Witnesses:

said jointed link thereby permitting the ac- C. VEATMRSON, tion of the counter-weight on the door to E. A. SMITH. 

